At a press conference Thursday morning, police said that Shawn Walker’s parents contacted officers after they recognized him from surveillance video released of Sunday’s robbery and shooting. In the video, a man in a blue hoodie, who police identified as Walker, is seen walking through the North Philadelphia (Broad Street and Glenwood Avenue) station.

NBC10 learned that officers arrested Walker at his aunt's house on the 5200 block of Duffield Street in the Wissinoming section of the city less than two hours after the press conference.

Walker is accused of shooting a 53-year-old man in the hip around 7:40 p.m. Sunday as the man tried to run away after Walker allegedly tried to rob him. As the victim lay on the ground, police say Walker took $280 in cash and credit cards. The man survived the shooting.

"I really feel that this guy would have shot and killed him if it wasn't for the SEPTA police walking around the corner and helping (the victim) at that point," Philadelphia Police Lt. George McClay said.